Patents Assigned to Komatsu Electronics Metals Co., Ltd.
  • Patent number: 4038370
    Abstract: A method of producing high-purity transparent vitreous silica by supplying to a burner a high-purity silane type gas, and an inert gas, hydrogen gas and oxygen gas to effect the flame hydrolysis, comprising growing highly pure transparent vitreous silica at a controlled atmosphere of said flame that may increase the oxygen defect concentration of the vitreous silica, and thereafter heat-treating said formed body.
    Type: Grant
    Filed: September 23, 1975
    Date of Patent: July 26, 1977
    Assignee: Komatsu Electronic Metals Co., Ltd.
    Inventors: Tadashi Tokimoto, Yoshinobu Hiraishi